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NFPA13 - Maximum spacing LD sprinklers

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Bagge

Mechanical
Joined
Mar 11, 2008
Messages
32
Location
DK
Hi,

I have a question regarding Large Drop sprinklers and spacing.

I have a noncombustible obstructed construction, rack storage, where I would like to use LD sprinklers. But the building construction is build with 24 ft. between the center of the beams (concrete tee construction). This will result in a maximum spacing between the sprinklers of 12 ft.

This is ok compared to the table 8.11.2.2.1 – but not if I have Rack storage applications. Why?

If you see in the section 8.11, it is not mentioned anywhere else, that I’m not allowed to space the sprinklers with 12 ft. if I have non-combustible obstructed construction. If I only see section 8.11.3.1.1 I’m allowed, even with rack storage applications.

So what should I think?

Best Regards

Nikolaj Bagge
Denmark
 
Are you missing and matching??

appears ceiling level can be 12 feet max

and when installed in the racks 10 foot max.

???? does tht answer the question???
 
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